Download Lenovo ThinkPad E550

Contents
About this manual. . . . . . . . . . .
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Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . .
Electrical safety . . . . . . . . . . . . . .
Safety inspection guide . . . . . . . . . . .
Handling devices that are sensitive to electrostatic
discharge. . . . . . . . . . . . . . . . .
Grounding requirements . . . . . . . . . . .
Safety notices (multilingual translations) . . . . .
Laser compliance statement (multilingual
translations) . . . . . . . . . . . . . . . .
Chapter 2. Important service
information . . . . . . . . . . . . . .
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Strategy for replacing FRUs . . . . . . . . .
Strategy for replacing a hard disk drive or a
solid-state drive . . . . . . . . . . . .
Important notice for replacing a system
board . . . . . . . . . . . . . . . .
How to use error codes . . . . . . . . .
Strategy for replacing FRUs for CTO, special-bid,
and standard models . . . . . . . . . . . .
Product definition . . . . . . . . . . . .
FRU identification . . . . . . . . . . .
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Chapter 3. General checkout . . . . .
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What to do first . . . . . . . .
Checkout guide . . . . . . . .
Lenovo Solution Center . . .
Quick test programs. . . . .
UEFI diagnostic program . . .
Bootable diagnostic programs.
Power system checkout . . . . .
Checking the ac power adapter
Checking operational charging
Checking the battery pack . .
Checking the coin-cell battery .
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Chapter 4. Related service
information . . . . . . . . . . . . . .
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Restoring the factory contents by using the
Recovery Disc Set . . . . . . . . . . . . .
Recovery overview for the Windows 8.1 operating
system . . . . . . . . . . . . . . . . . .
Refreshing your computer . . . . . . . .
Resetting your computer to the factory default
settings. . . . . . . . . . . . . . . .
© Copyright Lenovo 2014, 2015
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Using the advanced startup options . . . .
Recovering your operating system if Windows
8.1 fails to start. . . . . . . . . . . . .
Creating and using recovery media . . . . .
Passwords . . . . . . . . . . . . . . . .
Power-on password . . . . . . . . . . .
Hard disk password . . . . . . . . . . .
Supervisor password . . . . . . . . . .
How to remove the power-on password . . .
How to remove the hard disk password . . .
Power management . . . . . . . . . . . .
Screen blank mode (for the Windows 7
operating system only) . . . . . . . . . .
Sleep mode . . . . . . . . . . . . . .
Hibernation mode . . . . . . . . . . .
Symptom-to-FRU index . . . . . . . . . . .
Numeric error codes . . . . . . . . . .
Error messages . . . . . . . . . . . .
Beep symptoms . . . . . . . . . . . .
No-beep symptoms . . . . . . . . . . .
LCD-related symptoms . . . . . . . . .
Intermittent problems . . . . . . . . . .
Undetermined problems . . . . . . . . .
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Chapter 5. Status indicators . . . . .
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Chapter 6. Special keys . . . . . . . .
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Chapter 7. Locations . . . . . . . . .
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Locating computer controls, connectors,
indicators. . . . . . . . . . . . .
Front view. . . . . . . . . . .
Rear view . . . . . . . . . . .
Bottom view . . . . . . . . . .
Locating FRUs and CRUs . . . . . .
Major FRUs and CRUs. . . . . .
LCD FRUs and CRUs . . . . . .
Miscellaneous kits and other FRUs .
Looking up FRU information . . . . .
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Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . .
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Screw notices . . . . . . . . . .
Retaining serial numbers. . . . . .
Restoring the serial number of the
unit . . . . . . . . . . . .
Retaining the UUID . . . . . .
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